46,972 research outputs found

    A Modern Union for the Modern Economy

    Get PDF
    Membership in traditional unions has steeply declined over the past two decades. As the White House and Congress are now completely Republican controlled, there promises to be no reversal of this trend in the near future. In the face of this rejection of traditional bargaining efforts, several attempts have been made to create alternative “quasi-union” or “alt-labor” relationships between workers and employers. These arrangements represent a creative approach by workers to have their voices heard in a collective manner, though still falling far short of the traditional protections afforded by employment and labor law statutes. This Article critiques one such high-profile, quasi-union effort in the technology sector—the Uber Guild. While the Guild does not provide any of the traditional bargaining protections found in the National Labor Relations Act (NLRA), it offers Uber drivers some input over the terms and conditions under which they work. Falling somewhere between employment-at-will and unionization protected under the NLRA, the Uber Guild is a creative attempt to help both workers and the company to better understand how they can improve the working relationship. This Article navigates the Uber Guild and other nontraditional efforts that promise a collective voice for workers in the face of a precipitous decline in union membership. This Article further explores how workers in the technology sector face unique challenges under workplace laws. We argue that these workers are particularly well situated to benefit from a nontraditional union model and explain what that model should look like. While a traditional union protected by the NLRA is the optimal bargaining arrangement, we must consider the enormous challenges workers in the technology sector face in obtaining these protections

    Fluoride Release from Two High-Viscosity Glass Ionomers after Exposure to Fluoride Slurry and Varnish

    Get PDF
    The effect of brushing with different fluoride slurries on the fluoride release (FR) of different high-viscosity glass ionomer cements (GICs) was investigated. Fifty-eight discs were fabricated from two high-viscosity GICs (GC Fuji IX (F9) and 3M ESPE Ketac-fil (KF)). Five specimens from each brand were used to measure Vickers microhardness and the remaining were randomly assigned to one of four groups (n = 6) based on two-factor combinations: (1) fluoride concentration in the abrasive slurry (275 or 1250 ppm fluoride as NaF) and (2) immersion in a 22,500 ppm fluoride-containing solution. Specimens were brushed for a total of 20,000 strokes over 4 days with daily FR measurement. Data were analyzed using analysis of variance and Bonferroni tests (α = 0.05). Baseline FR and microhardness values were different between the two tested material brands. Exposure to a 22,500 ppm solution was associated with higher FR but not the exposure to 1250 ppm slurries. Brushing and immersion of glass ionomer cements in a 22,500 ppm F solution led to higher FR that was more sustained for KF. Type of the glass ionomer, progressive brushing, and fluoride varnish affected FR but not the fluoride content in the abrasive slurry

    Explant Analysis of Total Disc Replacement

    Get PDF
    Explant analysis of human disc prostheses allow early evaluation of the host response to the prosthesis and the response of the prosthesis from the host. Furthermore, early predictions of failure and wear can be obtained. Thus far, about 2-3% of disc prostheses have been removed. Observed wear patterns are similar to that of appendicular prostheses including abrasions/scratching, burnishing, surface deformation, fatigue, and embedded debris. Chemically the polymeric components have shown little degradation in short-term implantation. In metal on metal prostheses the histologic responses consist of large numbers of metallic particles with occasional macrophages and giant cells. Only rare cases of significant inflammatory response from polymeric debris have been seen

    Swirl coaxial injector element characterization for booster engines

    Get PDF
    Recent hot fire testing at the Marshall Space Flight Center (MSFC) has indicated the swirl-coaxial element to be a viable candidate for the STBE injector. Plans are to test the current 40K lbf thrust injector at the higher chamber pressure and colder fuel temperature which are anticipated for STBE. A cold flow program to characterize the swirl coax element over a range of operating points was conducted. The results are presented and compared to the hot fire data. Predictions for compatibility, performance and stability are then presented for the uprated test conditions

    Can the Fed be a payment system innovator?

    Get PDF
    Competition ; Payment systems

    Periodicity and Growth in a Lattice Gas with Dynamical Geometry

    Full text link
    We study a one-dimensional lattice gas "dynamical geometry model" in which local reversible interactions of counter-rotating groups of particles on a ring can create or destroy lattice sites. We exhibit many periodic orbits and and show that all other solutions have asymptotically growing lattice length in both directions of time. We explain why the length grows as t\sqrt{t} in all cases examined. We completely solve the dynamics for small numbers of particles with arbitrary initial conditions.Comment: 18 pages, LaTe

    Inflation and unemployment: a layperson's guide to the Phillips curve

    Get PDF
    Inflation (Finance) ; Unemployment ; Phillips curve
    corecore